The three-dimensional measurement research of aero-engine blade based on structured light

Fu, Yanjun; Wan, Meiting

doi:10.1117/12.899376

Cited by 3 publications

(2 citation statements)

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“…As the increasing demands of high-quality complex components, the precision evaluation of free-form surface parts become more and more significant [1]- [3]. The contour error evaluation of free-form surface is critical to the high-precision manufacturing of key parts in the civil and military industries.…”

Section: Introductionmentioning

confidence: 99%

Modelling and simulation of the contour error evaluation based on spherically-approximated patches for freeform surface

Fan

Kang

Dai

et al. 2023

Preprint

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The mathematical modelling of contour error evaluation in Computer Aided Manufacture (CAM) system is critical for high-precision measurement and manufacture of free-form surface. The existing methods of evaluating the contour errorfor free-form surface have been developed based on various models. Nevertheless, there still exist some of the shortcomings when applied practically, including the inaccurate distance model between the measured point cloud (MPC) and ideal surface, numerical search required for the correspondence, possible local optimum of solution, the inapplicability to all the surfaces, the huge point cloud required, and heavy computational load in the registration iteration, and so forth. Toovercome those shortcomings, this work proposes the spherically-approximated patch (SAP) registrationmethod for the contour error evaluation of free-form surface. The significance of registration between MPC and the SAP set is theoretically analyzed. The SAP set for the ideal surface is efficiently generated based on the centroid-midpoint search of parametric triangle subdivision (CMSPTS). And the tactics of efficiently computing the shortest distance from the MPC to the SAP set based on a local spreading search function (LSSF) is provided. Finally, the scheme of evaluating contour error based on the Point-To-SAP (PTSAP) registration is developed. The comparative simulation and experiment demonstrate that the proposed method raises the registration level between MPC and the ideal surface and produces the evaluation result closer to the theoretical one with an acceptable efficiency, and reduces the size of ideal point cloud compared with the existing methods.

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Section: Introductionmentioning

confidence: 99%

Modelling and simulation of the contour error evaluation based on spherically-approximated patches for freeform surface

Fan

Kang

Dai

et al. 2023

Preprint

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show abstract

“…The measurement of the blade involves a three-dimensional curved surface measurement of space. Its complexity and diversity causes considerable difficulty in this measurement [ 2 ]. As one of the core components in aero-engines, when the detection accuracy of the blade is improved and the process quality is controlled, engine performance and service life can be effectively improved.…”

Section: Introductionmentioning

confidence: 99%

A Rapid Method to Achieve Aero-Engine Blade Form Detection

Sun

2015

Sensors

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This paper proposes a rapid method to detect aero-engine blade form, according to the characteristics of an aero-engine blade surface. This method first deduces an inclination error model in free-form surface measurements based on the non-contact laser triangulation principle. Then a four-coordinate measuring system was independently developed, a special fixture was designed according to the blade shape features, and a fast measurement of the blade features path was planned. Finally, by using the inclination error model for correction of acquired data, the measurement error that was caused by tilt form is compensated. As a result the measurement accuracy of the Laser Displacement Sensor was less than 10 μm. After the experimental verification, this method makes full use of optical non-contact measurement fast speed, high precision and wide measuring range of features. Using a standard gauge block as a measurement reference, the coordinate system conversion data is simple and practical. It not only improves the measurement accuracy of the blade surface, but also its measurement efficiency. Therefore, this method increases the value of the measurement of complex surfaces.

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The contour error evaluation based on spherically-approximated patches for free-form surface

Fan,

Min,

Dai

et al. 2024

Int J Adv Manuf Technol

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The three-dimensional measurement research of aero-engine blade based on structured light

Cited by 3 publications

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Modelling and simulation of the contour error evaluation based on spherically-approximated patches for freeform surface

Modelling and simulation of the contour error evaluation based on spherically-approximated patches for freeform surface

A Rapid Method to Achieve Aero-Engine Blade Form Detection

The contour error evaluation based on spherically-approximated patches for free-form surface

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